Mmadness
Mmadness HalfDork
12/8/14 4:25 p.m.

Like this: http://www.moogproblemsolver.com/steering/alignment-parts/rear-contact-shims Will this work on a live rear axle? Specifically a '14 Mustang?

jimbbski
jimbbski HalfDork
12/8/14 10:51 p.m.

I know that they use them to adjust alignment in the rear of FWD cars. Since the '14 Mustang is a live axle I don't see where you can fit them that would do anything.

Most FWD cars have stub axles in the rear. The beam axle or IRS as the case may be is designed to have the stub axle bolt on to the assembly. Camber and/or toe can be adjusted by fitting these shims between the two parts. I don't like plastic for a shim. That's all I got.

Knurled
Knurled PowerDork
12/9/14 5:24 a.m.

No. You adjust camber in a solid axle by bending the rearend housing either in a press or by heating the top with a torch and letting it cool naturally. You can get about a half degree this way. Because the tires by definition stay flat to the ground and don't move with the chassis like an independent, you don't need very much camber anyway, just enough to offset tire flex.

foxtrapper
foxtrapper UltimaDork
12/9/14 5:25 a.m.

Within limits, they work. You pull the axle shaft out, put this in, and reinstall the axle shaft. These things work by basically warping the end the hub carrier mounts to on the axle housing, and slightly flexes the axle shaft.

Knurled
Knurled PowerDork
12/9/14 5:30 a.m.

Except they don't even have "hub carriers". There is a roller bearing that presses into the end of the axle tube, then the axle shaft rides semi-loosely in that bearing. The camber angle is dictated by how car off horizontal the axle bearing to side gear axis is.

Yeah, still using C-clip axles. Had to double check to make sure. Even Jeep has gone to unitized hubs and full floating axles.

logdog
logdog Dork
12/9/14 5:55 a.m.

I have only those used on fwd rear beam axles. Things like Chrysler minivans. They are plastic to avoid rust and dissimilar metal corrosion.

GameboyRMH
GameboyRMH MegaDork
12/9/14 7:07 a.m.
Mmadness wrote: Will this work on a live rear axle? Specifically a '14 Mustang?

First of all, didn't all Mustangs switch to IRS in '09?

failboat
failboat UltraDork
12/9/14 7:08 a.m.

nope

GameboyRMH
GameboyRMH MegaDork
12/9/14 7:12 a.m.

Yeah looks like it's starting from next year. I thought they had switched already for some reason.

Knurled
Knurled PowerDork
12/9/14 7:15 a.m.

'99 model year Cobra had it. I think '99.

Spoolpigeon
Spoolpigeon UltraDork
12/9/14 9:53 a.m.

A few Cobras over the years had IRS, but the rest were all solid axle. 2015 will be the first year that all models get IRS.

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